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Finding the Fourth Proportional to 389,807.88, 537,934.87 and 210,959.88

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Solution

The fourth proportional to 389,807.88, 537,934.87 and 210,959.88 is: 291,124.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,807.88 : 537,934.87 = 210,959.88 : x
  2. Step 2: Convert to fraction form
    389,807.88/537,934.87 = 210,959.88/x
  3. Step 3: Cross multiply
    389,807.88x = 537,934.87 × 210,959.88
  4. Step 4: Simplify right side
    389,807.88x = 113,482,675,623.02
  5. Step 5: Solve for x
    x = 113,482,675,623.02/389,807.88
  6. Step 6: Final answer
    x = 291,124.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.